Understanding technical terms used in SSL is essential. Here you can learn more about:

• The "green bar" display
  
• The additional licence purchase
• The certificate free reissue
  
• The browsers recognition
  

"Green bar" display with EV certificates (Extended Validation)

An EV SSL certificate installed on a machine displays a green bar in the address bar of the browser.

That green bar is a visual garantee that the transactions are secured on a website.

Green bar display on the most popular browsers:



In 2007, several surveys showed that the green bar display generated instant positive reactions for 75% of internet users,a 15% raise of the purchase intentions and a 15% decrease in the abandonment of the purchase process.

The EV SSL certificate is therefore a powerfull marketing tool that can boost your Ecommerce websites.



Additional licence purchase

Depending on your needs or your technical pool,you may need to buy additionnal certificates or licences.

A certificate's always sold to be installed on a unique machine (physical or virtual).The additionnal licence makes then possible to duplicate an existing certificate instead of buying a new one for each different machine you may use.

• Physical machine:Electricaly connected machine
• Virtual machine:In process machine

Several configuration can be encountered :

• Active / Active
• Active / Inactive
• Back-up site
• Several virtual machines on one physical machine

How many licences or certificates do I need to buy ?



A digital certificate reissue:

A new certificate can be reissued in substitution of an existing one with the same fields but a different pair of keys*.
That can be done in those situations:

• A certificate loss after a hard disk failure
• A software switching
• The modification of the key sizes
• The vulnerability of the privet key
• The upgrating of the signature from MD5 to SHA1

*pair of keys : Item privet key / public key elements : if a new pair of keys is needed a new CSR has to be requested.

Browsers recognition
The SSL certificate is issued partly to garantee the integrity and the security of the online transactions no matter the browser used.

That's why, TBS X509 has installed its certificates root on the most popular browsers:


That work enables TBS X509's certificates to be massively recognized by the browsers (more than 97%).

TO SUM UP:When opening a secured session (connexion to a HTTPS page) the browser checks the validity of the certificate and makes sure  that it has been issued by a trusted certification authority.

The SSL certificate is trusted if it is signed by a "trusted" or pre-installed root certificate.